Controller for casement windows



May 26, 1925.

E. H. ELLISON CONTROLLER FOR CASEMENT WINDOWS Filed June 26, 1924 Hal Patented May 26, 1925 UNlTED STATES EDWARD H. ELLISON, OF JAMES TOWN, NEW YORK.

CONTROLLER IIEOR CASEMENT WINDOWS.

Application filed June 26, 1924. Serial No. 722,477.

To all whom 2'25 may (mice/'11 lie it known that I, llownnn ll. ELLi'soN,

a citizen oi the United States, residing at Lakewood Road, in the city of Jamestown, in the county of Chautauqua and State of New York, have invented certain new and u'se't'ul Improvements in Controllers for Casement Windows, of which the following, taken in connection with the accompanying drawings, is a specification.

This invention relates to an improvement in a controller for casement windows and more particularly to means for positively holding a window of that type in a pre-delerniiued position and at the same time eliminating any vibration between the parts of the controller.

(lontrollers of this general type are old and well-known but it has been found that, in every instance, the parts of the controller rattle and vibrate particularly when. the window is opened and exposed to the wind.

The primary object 01 this invention is to avoid such an objection by the provision of means for yieldingly engaging parts in close contact Without interfering in any way with the operation of the controller.

fit-her objects will appear from a consideration of the following specification taken in connection with the drawings which form a part thereof, and in which v Fig. 1 is a front elevation of a swinging window assembly provided with a controller embed; lng one form of this invention;

2 is plan view of the window and controller, the upper part of the casing bein removed and the window being shown a-view similar to Fig. 2 the winshown partly open;

a bottom plan view of the gear mechanism by which the window controller actuated; q

5 is a view on an enlarged scale of a portion of the gear mechanism;

Fig. 6 is a fragmentary sectional plan View taken along he liney66 of 5;

Fig. 4 is a mental-y sectional plan view taken along ie line '77 of Fig. 5;

Fig. 8 is an enlarged detailed view showin g another .i'eatnre of this invention.

Referring to the drawings the reierence numeral 10 is employed to designate a window casing provided with a casement winwhich engages a worm 22.

dow 11 secured to the casing at one side by the hinges 12. Suitably mounted in the easing 10 on the opposite side from the window 11 is a screen 13 which may be secured in position in any desired manner. A window of the side opening vtype is shown for pur pose of illustration but it will be understood that the invention may be installed equally well upon any other type of hinged window and that applicant is in no way limited to the type particularly shown.

.The window controller mechanism designated broadly by the numeral 14 comprises a gear mechanism 15, enclosed in a casing 16 and adapted to actuate an arm 17 the outer end of which slidably engages a bar 18. The bar 17 which is hollow, is rigidly secured to the frame of the window 11 by standards 19, and is provided onits underside with a slot 20 which extends from one standard to the other. The gearmechanism 15 comprises a toothed segment gear 21 One end of the worm. 22 is seated in and extends through a sleeve 28 threadedly secured in the casing 16 and is provided with a rectangular socket which receives one end of the operating handie 24. The handle 24 is passed through a hole (not shown) in the frame of the screen and thus the window is opened or closed without removing" or opening the screen. Qhe other end of the worm rests in a slot or recess 25 which asshown particularly in Fig. 7 holds the worm against the movement parallel to the axis of the gear 21 hut permits movement of that end of the worm toward and from the g ar.

It is obviously very difficult to provide a worm and gear so formed that under all conditions the parts will mesh perfectly and obviously if there be any high spots on the it is necessary under normal'conditions w to mount the worm so that when the high spots are in engagement there will. he no binding between the worm and the gear. Hence it this practice is followed when the worm and gear are in mesh at other than the high spots of the gear there will he certain amount. of play between the parts. In order to obviate this and to insure close engagement at all times a plate 26 is provid- .or from the gear@ The arm 17 is rigidly carried on the shaft 29 of the gear so that when the gear is r0 tated by the Worm 22 upon the turning of the handle 25 the arm 17 will turn with the shaft 29. At the outer end of the arm 17 is formed a boss through which extends a screw 31 threaded into an opening in a block 32 which is slidably mounted in the bar 18 v the screw 31 extending through the slot 30. in the under side of the bar in order to hold the block in position and to prevent any play between the block and the bar a spring 33 is provided which yieldingly holds the block at all times in contact with one side of the bar 18.

The only parts of the controller which are not rigidly held in engagement are the block 32 which is carried by the arm 17 and the bar 18 and the gear 21 and worm 22. Any play or vibration that might be set up in this construction will, therefore, be at one of these two points and in order to avoid this the spring 33' and plate 26 and spring 28 have been provided.

While one embodiment of this invention hasbeen shown and described, I am not to be limited thereto since it is obvious that others may be made without departing from the spirit and scope of the invention as set forth in the following claims.

Having thus set forth my invention which with said bar, a gear mechanism for actuating said arm, said mechanism comprising a segment gear and a worm meshing with said gear and means for rotating said worm, and means for yieldingly holding said arm in engagement with said bar and said worm in engagement with said gear.

2. A controller for a casement window consisting of a slotted bar-mounted upon the window,'an arm in sliding engagement with said bar, a gear mechanism for actuating said arm, said mechanism comprising a segment gear and a worm meshing with said gear and means for rotating said worm, a spring for yieldingly holding said arm in engagement with said bar and a spring pressed plate bearing uponsaid worm and holding it in yielding engagement with said gear.

3. A controller for a casement window consisting of a slotted bar mounted upon the window, an arm in sliding engagement with said bar, a gear mechanism for actuating said arm, said mechanism comprising a segment gear and a worm meshing with said gear and means for. rotating said worm, and a spring pressed plate bearing upon said worm and holding it in yielding engagement with said gear.

In testimony signature.

EDWARD H. ELLISON.

whereof I have aflixed my 7 

